==== How to install camera ====
Method that I have used to install camera:
1. place it to /system/app/folder
2. EZ Explorer, select and press on file /system/app/htccamera.apk
3. install app
4. manage applications/camera/clear data

[Edited]
1. You probably will need to make system partition writable (gain rw access)
2. Link to camera disappears after installing. It is ok. Just remade link from ALL APPS
3. You probably will need to reboot your phone
4. You may need to manually place files from original HTC_SENSATION!!!_HTCAmaze_Camera_MODv3_Repacked.zip except HTCCamera.apk to proper folders. (media_profiles.xml, /lib/*.so, /framework/*.*). Clear cache & dalvik cache. WARNING: it's possible that in your rom something is incompatible with some .so. It can take evo to continous bootloop. (if so - remove and install battery back , go to recovery and restore files you replaced via adb)